I think that we have to think in English.Instead of translating from our native languages.we have to change our mindset.
Can you add here your experience
When were you fluent in English
We speak fluently when we are at our comfort level .
Learn a new word everyday but then again find someone to speak with so you dont forget and you can practice with either in person or online. Better still most people can take online conversation classes.
I think the baby step will be practise alone before the mirror , talking to your image anything that crosses your mind,.like…
How are you, how do you feel,what is your plan today, like that. You have free flowing talk ,without hesitation,without fear.